The fn applet has been updated to work with OS X Mavericks 10.9+. OS X now has a different method for allowing an app like this to work, luckily the change is quite simple. When you first run v1.2.1 it should tell you that the app must be approved to allow an app to control your computer. In System Preferences/Security/Accessibility you can add apps manually if necessary.

AErender has been updated to v1.1 which makes it universal. When you launch the app for the first time it will simply ask where After Effects is located. If you ever need to reset you just need to delete the preference file (~/Library/Preferences/com.andorulabs.AErender). Your Library folder may be hidden by default.

AEae has been updated to v1.1.1 which makes it universal. When you launch the app for the first time it will simply ask where After Effects is located. If you ever need to reset you just need to delete the preference file (~/Library/Application Support/Preferences/com.andorulabs.aeaeX).